# NTSB Accident MKC89LA064
> **CESSNA 172B** · 1989-02-25 · UNIONVILLE, IA, USA · NONE
## Event
- **NTSB number:** MKC89LA064
- **Event ID:** 20001213X27784
- **Type:** Accident
- **Date:** 1989-02-25
- **Location:** UNIONVILLE, IA, USA
- **Coordinates:** 40.810924, -92.689964
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** CESSNA
- **Model:** 172B
- **Registration:** N7662X
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE FAILURE OF THE ENGINE DUE TO CARBURETOR ICE. CONTRIBUTING FACTORS INCLUDED CARBURETOR ICING CONDITIONS, IMPROPER USE OF THE CARBURETOR HEAT CONTROL BY THE PILOT, AND THE IMPROPERLY RIGGED CARBURETOR AIR BOX WHICH RESULTED IN REDUCED CARBURETOR HEATING CAPABILITY.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MKC89LA064) · AI Analytics · CC0 1.0*